The battery is exhausted frequently - how often need to charge?

Battery seems to be exhausted often. i.e., charged 12/23 - used camera a little on 12/24. Wanted to use on 12/25 but as soon as I opened the camera it indicated "battery exhausted". How long is the charge supposed to last? This is really frustrating -- it happned in October on a weekend trip also -- just able to use the camera the first day.

To set the language on the COOLIPIX S80:Tap the bottom arrow on the screen, then tap the wrench icon to enter the Setup menu. Scroll through the menu until you see the Flag Icon which indicates the Language option. Tap the Flag icon, then scroll through the Language options to find "English". Tap "English" to save the setting.